The traumatised 29-year-old was left covered in blood as one nearby victim was shot at close range and others fell dead or wounded around him.

As the gunmen reloaded their automatic weapons after firing into the crowd, Allan took his chance to run for his life with dozens of others.

Speaking from Paris, Allan said he ran a half a mile from the venue as the carnage continued inside.

He told of his relief at hearing his friend’s voice on the phone after they had been separated in the chaos.

Determined not to let the attacks impact on their lives, the pair headed back to the streets of Paris the next day.

Allan said: “We went out for some beers on Saturday so as to not really let the b******s win.

“They would win if we didn’t go about our lives the way we used to so we got on the underground, went to a pub and celebrated life.”

Reliving his ordeal at the gig, Allan said: “About 45 minutes in we were close to the front of the crowd and thought we heard fireworks or fire crackers as part of the show.

“Then the lights came on and we realised it was people firing guns.

“Everyone hit the floor and I was just covering my head.

“I got separated from my friend pretty quickly.

“They were just spraying bullets into people on the floor – the guy behind me got shot and ended up covering me in blood.

“After about 30 seconds on the floor, I decided to get up and just try to make it out.”

As Allan and others fled for exit, the gunmen turned their weapons on them.

“A couple more people got shot as they saw people running for the exits,” he said.

“I scrambled down the stairs, another guy got shot and fell down the stairs. I made it out.

“We had dodged the fire by a matter of inches, it was just complete luck.”

The Bataclan was the last of the terror targets – and the worst.

The terrorists entered the venue at 9.40pm, just after the other gun attacks in Paris.

The three gunmen armed with automatic rifles spent two hours and 40 minutes in the building, firing into the packed audience of 1500 before beginning a siege.

This ended when anti-terrorist police stormed the building. Two of the gunmen blew themselves up with suicide vests, while the third was shot by police.

Among those killed was Nick Alexander, 36, from Colchester, Essex, who sold merchandise for the Eagles of Death Metal.

As the carnage unfolded, fans fled for exits but found themselves trapped in rooms or the basement, while some left from windows high above the street. A horrific image on twitter showed more than 20 bodies on the floor of the auditorium.

Blood marks on the floor suggested that some wounded people had tried to crawl away.

Allan, who was due to fly back to his home in Norway, said the scene at the venue is something that will never leave him.

He added: “There were people dragging their friends who had been shot. It was just chaos, blood everywhere, people crying, trying to get away from the venue. I got together with some Parisians and we ran maybe a kilometre.”

After being separated from his friend inside the venue, Allan frantically tried to contact him.

He said: “It was the most relieved I’ve ever been hearing that he was OK.